Palette knife



FIG. 1 is a top view of the instant invention with the bottom view of the blade being a mirror image thereof; and,

FIG. 2 is a left side view of a first embodiment the instant invention with the right side view being a mirror image thereof.

The broken lines showing the handle in FIGS. 1 and 2 are included for the purpose of showing a portion of the palette knife that forms no part of the claimed design. 

The ornamental design for a palette knife, as shown and described. 